package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.mapper.DishMapper;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;
import java.util.stream.Collectors;

/**
 * @BelongsProject: reggie_take_out
 * @BelongsPackage: com.itheima.reggie.service.impl
 * @Author: song
 * @CreateTime: 2022-06-12  18:37
 * @Description: TODO
 * @Version: 1.0
 */

@Service
@Slf4j
public class DishServiceImpl extends ServiceImpl<DishMapper, Dish> implements DishService {

    @Autowired
    private DishFlavorService dishFlavorService;
    /**
     * @description: 新增菜品同时保存口味数据
     * @author: song
     * @date: 2022/6/19 10:41
     * @param: [dishDto]
     * @return: void
     **/
    @Override
    @Transactional
    public void saveWithFlavor(DishDto dishDto) {
        // 保存菜品的基本信息
        this.save(dishDto);
        // 菜品id
        Long dishId = dishDto.getId();
        //  保存菜品口味数据到DishFlavor
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item) -> {
           item.setDishId(dishId);
           return item;
        }).collect(Collectors.toList());
        dishFlavorService.saveBatch(flavors);
    }

    @Override
    public DishDto getByIdWithFlavor(Long id) {

        // 查询菜品基本信息
        Dish dish = this.getById(id);

        DishDto dishDto = new DishDto();
        BeanUtils.copyProperties(dish,dishDto);
        // 查询当前菜品对应的口味信息
        LambdaQueryWrapper<DishFlavor> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dish.getId());
        List<DishFlavor> flavors = dishFlavorService.list(queryWrapper);
        dishDto.setFlavors(flavors);
        return dishDto;
    }

    @Override
    @Transactional
    public void updateWithFlavor(DishDto dishDto) {
        // 更新dish表
        this.updateById(dishDto);
        // 清理当前菜品对应的口味数据---dish_flavor表delete操作
        LambdaQueryWrapper<DishFlavor> queryWrapper =new LambdaQueryWrapper<>();
        queryWrapper.eq(DishFlavor::getDishId,dishDto.getId());
        dishFlavorService.remove(queryWrapper);
        // 添加当前提交过来的口味数据---dish__flavor表的insert操作
        List<DishFlavor> flavors = dishDto.getFlavors();
        flavors = flavors.stream().map((item) -> {
            item.setDishId(dishDto.getId());
            return item;
        }).collect(Collectors.toList());

        dishFlavorService.saveBatch(flavors);
    }
}
